kolibrios/programs/develop/open watcom/trunk/clib/environ/gtcmd.c

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/****************************************************************************
*
* Open Watcom Project
*
* Portions Copyright (c) 1983-2002 Sybase, Inc. All Rights Reserved.
*
* ========================================================================
*
* This file contains Original Code and/or Modifications of Original
* Code as defined in and that are subject to the Sybase Open Watcom
* Public License version 1.0 (the 'License'). You may not use this file
* except in compliance with the License. BY USING THIS FILE YOU AGREE TO
* ALL TERMS AND CONDITIONS OF THE LICENSE. A copy of the License is
* provided with the Original Code and Modifications, and is also
* available at www.sybase.com/developer/opensource.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND SYBASE AND ALL CONTRIBUTORS HEREBY DISCLAIM
* ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR
* NON-INFRINGEMENT. Please see the License for the specific language
* governing rights and limitations under the License.
*
* ========================================================================
*
* Description: Multi-platform implementation of getcmd() and _bgetcmd().
*
****************************************************************************/
#include "variety.h"
#include <limits.h>
#include <ctype.h>
#include <string.h>
#if defined(__NT__)
#elif defined(__OS2__)
#endif
#if !defined( __NETWARE__ ) || defined( _NETWARE_LIBC )
#include <process.h>
#endif
extern char *_LpCmdLine;
_WCRTLINK int _bgetcmd( char *buffer, int len )
{
int cmdlen;
char *cmd;
char *tmp;
if( buffer && (len > 0) )
*buffer = '\0';
cmd = _LpCmdLine;
if( !cmd )
return( 0 );
while( *cmd == ' ' || *cmd == '\t' )
++cmd;
for( cmdlen = 0, tmp = cmd; *tmp; ++tmp, ++cmdlen )
;
if( !buffer || (len <= 0) )
return( cmdlen );
len--;
len = (len < cmdlen) ? len : cmdlen;
while( len ) {
*buffer++ = *cmd++;
--len;
}
buffer[len] = '\0';
return( cmdlen );
} /* _bgetcmd() */
_WCRTLINK char *getcmd( char *buffer )
{
_bgetcmd( buffer, INT_MAX );
return( buffer );
} /* getcmd() */